Scraper



A. T. FLETCHER Marh 2, 1943.

SCRAPER I Filed April 18, 1941 'My invention relatesto scrapers. 1 1

.provide improved clamping improvement;

Patented Mar. 2, 1943 UNITED STATES I PATIEIIFJ'I' OFFICE scnsPER f ithur,T.'- Eletcher, Bristol, Conn. AppIication AprillSI, 1941, Serial No. 389,127

provideanimproved for use on wood or It has among its objects to scraper especially adapted the like, and, more particularly, such a scraper of the type; adapted to utilize a blade. A further object of my invention, is. to means for such a scraper including improved clamping surfaceson the holder, and an improved clamping member cooperting therewith and with the blade, whereby the latter is fixed rigidly to the holder while producing an exceedingly simple, rugged blade clamping construction which is readily tightened or released while also being adapted to be inexpensively manufactured. jects and advantages of my improvements, will, however, hereinafter more fully appear. a

In the accompanying drawing, I have shown fOr purposes of illustration certain embodiments which my invention may assume in practice.

In the drawing: Figure 1 is a side elevation of one form of my Fig. 2 is a top plan view of the working end of this scraper;

.Fig. 3 is a like bottom plan view thereof;

Fig. 4 is a detail perspective view of the clamping member;

Fig. 5 is a like view of the working end of the holder;

, Fig. 6 is a top plan view. of the working end of a modified construction of larger size, and

Fig. 7 is a side elevation of this modified construction. L

In the form of my invention shown in Figures.

1 to 5, I have shown a scraper including a body or handle portion, generally indicated at I, and

having an improved. working end 2 and a narrow double-edged blade 3 clamped in an improved --manner on this working end by an improved clamping member 4 which is clamped in operative position by clamping means 5; the several elements being improved and cooperating in an improved manner, as hereinafter described.

Referring more particularly to the holder l and the working end 2 thereof, it will be noted that while the holder may be of various forms, it

herein is in'the form of an elongated oblong form of substantially uniform cross section, suitable for use in connection with so-called inch type scrapers, while the working end 2 of this -holder of an improved construction. More particularly, 7

slot 6 is-provided in the top of. this'working end eta point adjacent the frOntorzworking; 61301512 55 it will be observed that a transverse separable scraper? These and other ob-c abutment face 9 posed on substantially the same *2, a triangular space I3 is 9 Claims. I 01. 30-171) thereof. This slot 6 herein extends clear across the. holder and has a front inclined wall 7 inclined upward and toward the extremity of the working end, as shown, and lower than the other wall of the slot which is vertically disposed. Herein, also, a downwardly sloping fiat surface 8 is provided sloping fromthe upper edge of this wall 7 downwardly and forwardly, this surface also extending over the entire width of the Working end. As shown, a front angularly disposed extends downwardly and forfront edge of this surface 8rin to provide an inclined blade to engage all but the projectwardly from the suchmanner as abutment adapted row double-edged blade 3.

Cooperating with the inclined surfaces 1 and 9 on the working end 2 is my improved clamping member 4. Herein this member is also of the same Width as the working end 2 and in the form of a rigid slightly longer plate having angularly disposed flanges H and :2 along its opposite edges. Of these, the flange H is short and disangle as the sur' face I, which it is adapted to gages the surface 8 adjacent its surface I; while the flange I2 is longer than the flange II and emends downward angularly in spaced relation to the surface 9, preferably to a point below the bottom of the latter and in such manner as to extend close to the exposed edge of the blade 3.

portion 9 on the'body provided over the front portion of the body thereof and between the latter and the surf-ace 8, while the inside surface of the clamping member 4 engages the surface 8 at a point adjacent the inclined'surface 'l. a very effective clamping action is obtained the member 4 when .is moved-bodily toward the working end 2 by the clamping means 5, with the flanges II and I2 pressed downward against the diverging surfaces '1 and 9.

Herein, these clamping means include a single angularly through the working end 2 and passing through suitably centrally located registering apertures I5 and l 6 in the member 4 and working end 2. This bolt I4 herein has a slotted head I! overlying the member 4 and nut means on its opposite end. As shown, a hexagonal angularlydisposed recess I8 is provided in the bottom of the working endZJ'n alignment with the apertures l5 and I5, and a hexagonal nut I9 is carried on the opposite end of the bolt l4 and held against rotation in this hexagonal recess 18 in such manner as to permit the bolt l4 to be tightened or released when a screw driver is inserted in the slotted head i! thereof which is readily accessible on the upper surface of the scraper.

In the use of this improved construction, it will be apparent that a very effective clamping action is produced, due to the angular relation of the surfaces 1 and 9 on the working end 2 of the holder to one another and to the angularly disposed flanges II and 12 on the clamping member- 4. More particularly, when the bolt 14 is rotatedto tighten the clamp 4, the latter will bear and pivot on the surface 8 at a point adjacent the top of surface I in such manner as, due to -the I rigidity of the member 4, thus to utilize the diverging clamping surfaces 1 and 9 on theholder and H and I! on the clamping member to pro-' ducea very rigid clamping action, and consequent rigid clamping of the blades. Also,.it will be evident that when the bolt [4 is reversely rotated, the clamp will be released in such manner as to permit ready removal of the bladeand its reversal to expose a sharp edge, or the substitution of another blade, as desired.

In Figures 6 and '7, the construction is essentially similar to that heretofore described, although shown applied to a Wider scraper. Herein, however, it will be observed that instead of showing a construction requiring the use of a screw driver, a bolt is used having its head 2| in the recess l8 and a manually rotatable knurled nut 22 on its upper end which projects above the clamping member 4, a washer 23 also being disposed between the nut and the clamp 4. Obviously, thus nut may be of various forms, but. it is preferably of shallow type, as illustrated, in such manner as to permit the same to be comfortably disposed. in the palm of the hand when the scraper is held against the work. As a result of this construction, while obtaining the advantage of tight clamping and ready adjustment by adjusting means on the top ofthe scraper, it is also made possible to eliminate the necessity for the use of a screw driver, effective clamping being obtained by the mere use of the fingers.

As a result of my improved construction, while obtaining the desired rigid connection of the blade, it will also be observed that the construction is exceedingly simple and of a type adapted to be very inexpensivelymanufactured. Thus, the holder structure 2 may be readily formed from wood or the like, while the clamping member 4 is of a simple construction adapted to be inexpensively formed of bent metal. Attention is also directed to the rugged character of the construction and to the facility with which the clamp may be tightened or released. If desired,

also adapted .to .use on larger,

this structure is scrapers, while two or more clamping bolts may also be provided in such scrapers, spaced along the member 4 and blade 3.

While I have in this application specifically described certain forms which my invention may assume in practice, it will be understood that the same areshown for purposes of illustration, and that the invention may be modified and embodied .in various other forms Without departing from. its spirit or the scope of the appended claims.

What I claim .asnew and desire to secureby Letters-Patentis:- a

1. In a scraper, a holder having spaced relatively inclined diverging faces on its working end, and a top surface therebetween, one of said faces forming a blade abutment on the extremity of said holder and the other of said faces being remote from said abutment, and clamping means for pressing a blade against said abutment including a clamping member pivotally engaging aid holder at a point remote from said extremity and having spaced depending portions, one clamping said blade against said abutment and the other engaging said remote face on the holder, and means for moving said clamping member about its pivot on said holder.

2. A scraper as claimed in claim 1, and also having said top surface on the holdenwhen a blade is between said abutment and said clamping portion, spaced below the intermediate portion of said clamping member between the pivot thereof and said abutment to permit said clamping member to move in a clamping direction about its pivot. I

,3. A scraper as claimedin claim 1, and also having said top surface angularly related to the intermediate portion of said clampingmember when a blade is between said abutment and said clamping portion, and said top surface sufflciently spaced from .said intermediate portion to permit said clampingmember to move in a clamping direction about it'spivot.

4. A scraper as claimed :in claim 1, and also having said depending clamping portion longer than the dependingportion engaging said remote face, and said remote face forming the adjacent wall of a transverse groove in the top of said holder.

5. In a scraper, a holder block having an elongated handle portion and -a scraper attaching portion at its front end having a' transverse groove in .the'top surface of saidholder adjacent said front end and a downwardly inclined front extremity engageable by 'ablade', a .blade holding plate having an intermediate portion disposed substantially within the. vertical limits of said block and overlying said scraper attaching portionbetween saidgroove and front extremity and having depending flangesincluding a rear flange engaging the front wall of. said groove and a front flange extending downward along said extremity and overlying and pressing the :blade against said front extremity, and means carried by said scraper attachingportion for securing said plate in blade clamping relation thereto..

6. In a scraper, a holder block having .an.elongated handle portion and a scraper attaching portion at its. front end having atransverse groove in the top surface of said holder adjacent-said front end and a downwardly inclined front extremity engageable by a blade, a blade holding plate having. an intermediateportion disposed substantially. within .the verticallimits of said block and overlying said scraper attaching portion between said groove and front extremity and having depending flanges includinga rear flange engaging the front wall of said grooveand a front flange extending downward along said extremity and overlying and pressing the blade against said front. extremity, and means carried by said scraper attaching portion for. securing said plate thereto, the top ofsaid attaching portion between saidgroove and-frontextremity being downwardly inclined toward: the latter and engageable by'the rear, edge of. said plate adjacent. said groovej and said. securing means .being :disposed substantiallyperpendicular to said plate.

diverging faces, the rear face forming the front side of said groove and said faces being spaced at their upper ends by an elongated connecting surface, said front transverse face being longer than the rear transverse face and forming the front extremity of said working end.

9. A scraper clamp comprising a rigid clamping plate having an intermediate flat body portion and front and rear depending angularly disposed flanges on its opposite edges, the front flange of said flanges being longer than the rear flange.

ARTHUR T. FLETCHER. 

